单项选择题

Why are subterranean buildings good for energy conservation

A．Because they use solar energy.
B．Because they don't need central heating.
C．Because the temperature there remains constant.
D．Because they don't need air-conditioning.

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热门试题

单项选择题

According to Bennett's forecast of the .coming revolution in building design, ______.

A．future buildings will have only 20 ~,6 of their structure above the ground.
B．more future buildings will go subterranean than they do today.
C．only constructions of historic interest will remain above the ground.
D．subterranean structures will all go 110 feet into the earth.

单项选择题

For years Du Pont has helped firemen by ______.

A．putting out many fierce fires.
B．allowing them more time in putting out a fire
C．doing scientific research on fire wear.
D．revolting against fire authorities.